Dump car



A. CAMPBELL Jllly 28, 1925.

DUMP CAR Filed Feb, 9. 1924 2 sneets-sheer '1 llullilllllll'lll INVLNTOR. ARQ/LE CAN/BELL J' July 28, 1925.

A. CAMPBELL DUMP CAR Filed Feb, 9. 1924 2 Sheets-Sheet 2 IN1/EN TOR. A RGYLE CA MPBELL WITNEssEs.- v

2f www Cil Vio

Patented duly ARGYLE CAMPBELL, Ol '.CHICAGO', ILLINIS, ASSIGNOR TO-ENTERPR-SE RAILWAY EQUPMENT COMNYJ'-OF CHICAGO, ILL'JQNOS, A CORPORATION OF'ILLINOIS.

'DUMP GAR.v

v4Application ilcdebruary 9, 1924. Serial-11%: 691,830.

TocZZ-wlzomzftmag/ concern: Y

Be itflinownthat I, ARGYLE CAMPBELL, a Icitizen oic 'the United States, 'residing lat Chicagcyin the county `oli Cook and :State of Illinois, havey invented a certain new and useful improvement 4in 'Dump Cars, of which thefollowing is a iuil, clear, concise, and exact descriptioinf reference* being `had `to the accompanying drawings, forming a part of this specilication, Y

This invention relates to iinprovemeiitsin dump cars. l y

Anfobject ot' this invention isl-t-oprovide an improved car construction which'pwill '.provide for increased ciliciency and safety in the operation of dump cars.

llorespecifically, this invention relates to 'improvements in a door operating/mechanism'adapted forvpivoted drop doors and wherein is einployed'a slidable latch or lock carried-by the door adapted -to project over and rest upon' the shaft when the door is in closedrposition, andit is a particular object Vo'i this invention to provide an improvedr mounting `for this type: o't `a latch assuringy greater stability and security of operation than'is now possible witheexisting'types.

`Anotherobject' of theinven-tion is to provide an improved means o'i'frotatinga chimp door operatingshaft.

The invention"furthermore consists fin the improvements in the parts and devices and in the novel combination of thefparts and devices herein shownfdescribed' andl made the subject matter of claim. i

lIn the drawings 'orininga part offthis specilication,"Figure l is'ia plan view ofa portion of a drop bottom freight cai', showing my improvements in connection" there-L with-` 'Figure 2 is a? longitudinal sectional view taken on -a linecorresponding to aline 2 2 oiFigiiie l. Figure 8 is -a fragmenta'l side view oi' a portion of the car illustrating the shaft rotatingj inechanism'in' Ielevation.

Figure 4i is a vertical, sectionalfview taken on aline correspondingsubstantially toma line 4 4 o'fligure 1. -Figurefisa vertical, sectional view of the shaft rotating `mechanism, corresponding substantially to: the line 5 5 VofFigure lFigure 6 isa vertical, sectional View through the'latch'inechanism corresponding substantially to; the'line '6 6 of Figure 1. Figure 7 is a vertical, sectional view throughthe'latch mechanism correspendingy substantially 'to the line 17 71o'f `Figurell Figurexis ai plan View of a porJ tion otga-r drop bottom car illustratingadifferent embodiment Ioit the invention. Figlure. 9 is a vertical, section-al :view ftalren longitudinally ofthecar and on a. line cor- '60 responding substantiallyvto line 9 9 of lTigure Referring vtirst toV the `construction yshown in Figs- Ito 7 inclusive, 10c denotes one ot the 'side walls ofthe car, 1l one of the transverse crossbeams, i12 one oit" the upwardly extending;- sidey stakes ofl the oai-,iB 'lS fixed floor sectionshdisposed to either sideV o a dumping 1 vopening, le. a. .longitudinally eX- `tending-loor sectioii g disposed at the edge 17o yoit the door, and l5 a pivoted Iil'oorcloorfai ranged to be substantially.ilush'fwith the floor of the car whenthe ldoor is in closed position. `Said door l5 is'pivotedalong its `inner edge by means of hinge straps lzand 75 Vhingeupin's 17 tovhingebutts-i'lS riveted or otherwisesecured to one `vthe crossbeams ll ofthe car. The edges ofthe door'are preferably flanged as indicated at 19.

Althoug'hjin the drawings I have illus-1i8O vtrated only'a portion of afiioor door of a 'car and only ther immediately adjacent -porltions of the car, fit'Will be'understoodjloy thoselskilled in the art thatthere are preferably two doors disposed on aXes eXtend- '85 ing' transversely of thecaigfand respectively locatedlfto either side of theflongitudinal Vcenter'of the car and adapted to be operated in unison from acommon operatingshaft.

y"Latches and associated coloperating =,parts j59o will preferably'be used, two'forgeach door,

=an operating shaft 2O which entends parallel p tothe free edges of eachset of pivotedfdoors7 although it `will'fbel evident that asepa-rate Yoperating.sliai'tr` may bejprovided tOrsaid 100 ydoor disposed parallel to the tree' edgethereof. yThe operating :shaft Iis ilocated:l beyond the curved'pathfof:movement oi the "free edges/oftheV doors so4 Lthatvsaidedges 4clear the shafts and'associated parts. Saidshaft 105 2O is'also'located in a plane somewhat'below` the'plane of thel door with which it is associated. lnactual practice, in a carsuch `asindicated in the drawings,saidshaftA 2O y:will vpass throughV the centerlsills'of-thecar 110 not here shown), and will be there mounted in suitable bearings. At each side of the car the shaft is mounted in a suitable bearing 21 which is secured to the corresponding bottom chord 2 2 of the side wall, said chord 22 preferably consisting of an angle member having one flange 23 disposed in a vertical plane, and another flange 24- disposed in a horizontal plane. In cars of' this type it is customary to extend the side wall of the car below the floorlevel of the car, as shown in Figure il, thereby providing additional depth for the said side.

Mounted on each pivoted door, (there preferably being two lsets for each door) is al channel shaped member 25, to which the corresponding strap is secured, the member 25 having the web 26 thereof secured to the door and having spaced flanges 27--27 depending therefrom, said members 25 being located on the under side of the door. Near the free edge of the door there isprovided an additional member 28 having ahoriZontal web 29 spaced away from the door plate and two vertical webs C-30. each lying against theouter side of the flanges 27-27 of the hingemember, thereby completing a boxshaped l"receptacle open at its outer and inner ends within which "a slidable latch, designated generally bythe reference character A, is mounted. The outer end of said latch A, when the door is in closed position, rests directly over the shaft 2O and is supported thereby, and the inner end of the latch is supported on a roller bearing 31 which is pivotally mounted on a trunnion 32fixed relatively to the housing member 28. rlhe y ends of the roller bearing 8l are of reduced diameter as indicated at 3?) in order to permit th-eside flanges 3ft of the latch member A to straddle said roller, the side flanges 84 serving to give additional strength to the latch. member by increasing' the depth there` of. The rear .end of the latch is formed with a downwardly projecting portion 35 which operates to limit the outward movement of the latch in the housing through `engagen'ient of the same with the roller. The upper surface of the latch member A is provided with two longitudinally extending parallel grooves 36 which constitute runways for ball bearings 37 which are interposed between the latch and the door and being bodily movable provide forcasy movement of the latch member. Inasmuch as the intermediate bearing is called upon to sustain the sum of the individual loads atthe respective end supports of the latch it is evident that the liability to bind' is greater at the intermediate bearing and the disposition of a rolling antifriction bearing at this point provides for easy movement of the latch under load. On theother hand the load at the -inner end of the latch is comparatively small andtheuse of a fixed roller at this point provides for greater stability and also permits the use of a shorter housing than is possible when such end bearing member is bodily movable. 4

An opening 88 is provided in thelower horizontal wall of the housing through which the roller 31 is inserted and when the same is in operative position and with the trunnion 32 inV place the latch member A is prevented from pulling out. end the latch member is formed of restricted width for a limited distance as shown at 39 and a block 40, forming a terminal link of the connection between the shaft, and the latch is pivoted thereto, thel pivotal connection being shown at il and as will be noted,

said'pivotal connection is located directlyover the airis of theoperating shaft when t-he parts are in closed position. To the outer end of the block 4:0 is pivotally connected a link 4-2 and the latter is in turn At its outer pivotally connected at 43 to a link 44.' Pivi otally. attached tothe opposite end of said link 44k is a. link 45. which in turn is pivotally connected as indicated at 4:6 to thearm` 47 formed integrally with a hub casting /lS rigid with the shaft 20. ,Said hub casting 4:8 is formed on its upper face, when the parts are in position as in Fig. 2, with a flat surface i9 on which the locking block 40.

bears as shown in the" drawing. `In addition, said hub casting 48 is provided with an upstanding shoulder 50 which is arranged to engage a shoulder 5l formed on the locking block 4:0 for the purpose, hereinafter described.

The shaftrotating mechanism is disposed Y adjacent the-side wall of the car and a preferred construction includes a ratchet wheel 52 rigidly secured to the shaft by means of a squared portion 53 corresponding -to the shape Vof the shaft. A recess is formed in the ratchet as indicated at 54 and a pin 55 inserted through the `shaft to prevent out-` ward movement of the ratchet. Rotatable Awith respect to the ratchetv wheel 52, there is squared portion is perforated and the end of the shaft 2O is formed with a circular portion 61 which extends within the perforation formed. in the squared portion thereby producingV a very stable mechanism. A pawl 62 is pivotally mounted on one of the ferrules and by means of this pawl operative Cil engagement is established between the ro- "tatable member Btand the ratchet whee'l`52.

Co-operable with the ratchet whe'el`-52 is a pawlft Apivotally mounted on `tlie"brack'et 21 adapted to engage 'the saidratchet wheel '52 to lock'the'same:during the raising operation ofthedoor aii'd also preventthesh-aft 'from turning when the doors arel in ,closed means of an angle member 65 riveted` tothe door section andhaving a'iia'nge 66 extended downwarcly to ajpOint below the' latch meinber n, and in order' to allow the'latter' to pass over the shaft the saiddependin'g 'flange has a portion' thereoftformed (if restricted 'depth bybendmg ajport-ion of' the sameiat right angles.' to the main' body of thejtlange, as shown atV GT, and thereby forming a channel shape out of the angle at this point.

The operation is as follows: Assuming'the parts in they position shownfin Figs.1 1 and 2, the operator after'iirst'disengaging the locling cam'G-l'from the pawl @Band swinging the latter free of the-ratchet wheel 52 and Jthen rotating the pawl'` 62 in the direction indicated by the arrow t0 the position A'shown in dotted lines, rotatesY the mechanism B in a clockwise direction by engagement with the squared section. As the mechanism B is rotated in a. clockwise direction the shaft 2O will rotate in unison therewith due to the. cooperating engagement between the par-rl 62 and the ratchet wheel 52. As the shaft is thus rotated, the shoulder 50` formed on the hub casting 1S will engage the shoulder 51 formed on the locking block 10 and thus force the latch A rearwardly until the pivotal connection 41 is more to one side ot' the axis of the shaft when the weight of the door and lading will be sufficient to open the door and straighten the linkage. As the weight of the door and lading operateto unwind the shaft, the latter is rotated at great speed but the pawl 62 will ride freely over the ratchet wheel 52 so that the mechanism l and consequently the wrench in the hands of the operator will not be carried in unison therewith but on the contrary will be held steady while the opening movement of the door is being completed. The closing operation of the door is merely a reversal of the opening operation, it being understood that the operator first brings the pawl 63 into engagement with a ratchet wheel 52 and positions the pawl 62 as shown in full lines 2. l

Referring next to the construction illustrated in .t gs. 8 vand 9, the arrangement is identical with that hereinbefore described except that ay chain is used instead of linl-:ed arrangement, said chain winding on "boit 10a.

drum 101 adaptedto have cooperating en-70 gagementfwi'th teetlr 106'formed oir thexlatch a drumlOl' rigidly secured on a shaft102, the connection between'the latch 103 andthe chain 100being etfectedby means of an eyerleeth `105 are 'provided on .the

103 `and whereby' theI latch is'moved 'i in the housing. Y

Although `I have shown and describedn lherein whatv il now consider preferred em- 75 bodimentsy of thecmvention, the V'same are 'merely .illustrativa andi contemplate all changes' and modifications that come within the scope `of the claims appended hereto.

'l claim:

1511i an operatingV .mechanism for a' pivoted car door, the combination "with yan 'operating sliaftrotatabl'y mounted adjacent vthe front edge of the door; a'movable latch element carried by the door;"a stationaryfe anti-friction bearing element supported from the door'andadapted tov yco-act with 'one end of said latch element; a'bodti'ly mov- Aable anti-friction element'finterp'osed 'fbe-, "tween said'latch and door and space'drela--WO tively'` to `said iirst named'anti-friction element; and operative connections between said shaftand latch element.

'2.. In Vvan operating `mechanism Afor .ag7 v pivoted car :door, the "combinationf'with a"95 frotatablewinding shaft disposed adjacent "the/*free edge'of' the door; of aA latch'element slidably mounted on the door and adapted to engage over said shaft to support the door when closed; mea-ns adapted to be 100 wound upon said shaft, operatively connecting the latter with the latch element; antifriction bearing means for sl'idably mounting the latch on thel door, including a traveling anti-friction element interposed between 105.

the door and latch and an anti-friction roller element journaled on the door, supporting and co-operating with one end of said element.

3. n an operating pivoted door,` the combination with an operating shaft mounted adjacent the free edge of the door; of a latch co-acting with said shaft and operatively connected thereto;

means for slidably guiding said latch includ- U5 ing a channel member having the web portion thereof secured to the door and the flanges outstanding thereirom, said latch being guided between said flanges; and means for supporting said latch member between said anges.

4l. In a railway car the combination with the side wall of the car; of a door hinged on an aXis extending at right angles to the sidewall of the car; an extension on the side 25 wall of the car depending below the'plane of the door; a bottom ychord having"v a horizontally extending flange forming the lower margin of the said side wall; a shaft disposed adjacent the free, edge of the door and mechanism for a 110 beneath the side Wall; a bearing secured to the bottom chord of the side and Within, which vthe shaft is mounted, said bearing being secured to and disposed beneath the said horizontal iange of the bottom chord; shaft rotating mechanism disposed outside of the car Wall; and means operatively connecting the shaft to the door.

5. In an operating mechanism for y a pivoted car door7 the combination With an operating shaft mounted adjacent the free edge of the door; of a latch co-acting with said shaft and operatively connected thereto;

means for slidably guiding said latch, including a channel member in the form of a door brace extending across the door and connected to the hinge strap, said member having the webv portion thereof secured to the door and the iianges outstanding there-4 from, saidlatch being guided between said flanges; and means for supporting said latch member between said flanges.

6. In an operating mechanism for a pivoted car door,` the combination with a rotatable Winding shaft disposed adjacent the free edge o'l' the door; of a latch element slidably mounted on the door adapted to engage over said shaft to support the door when in closed position; anti-friction bearing means adapted to support the latch at a point remote from the shaft; a travelling anti-friction element interposed betvveen the p door and latch intermediate the ends of the latch, said element being movable relatively to the door and latch; and a connection adapted to be Wound upon Vsaid shaft and operatively connecting the latter With the latch element, said connection being adapted to operate as a compression member to displace the latch from its position on the shaft.

7 In an operating mechanism for a pivoted vcar door, the combination with a rotatable Winding shaft disposed adjacent the free edge ofv the door; of a latch element slidably mounted on Vthe door and adapted to engage over said shaft to support the door When closed; a connection adapted to'be Wound upon said sha-tt and having a terminal link operatively connected With the latch, said terminal link being adapted to be locked relatively to the shaft and operate to move the latch in either direction; and a travelling anti-friction element interposed between the door and latch, said element being movable relatively to both the latch and the door.

In Witness thatI claim the foregoing I have hereunto subscribed my name this 29th day of January 1924. Y Y

ARGYLE CAMPBELL. lVitnesses: 1 y

FRANCES SAVAGE, I-IARRmTTn M. BEAMER. y 

